Fumigator



(No Model.) v

T. H. MCDONALD. PUMIGATOR.

170,593,777. Patented Nov. 16, 1897.

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UNITED STATES PATENT EFic THOMAS HARVEY MCDONALD, OF POTOMAC, MONTANA.

F UMIGATOR.

SPECIFICATION forming part of Letters Patent No. 593,777, dated November16, 1897.

Application filed (Tune 14,1897.

To all whom it may concern.-

Be it known that I, THoMAs HARVEY Mo- DONALD, a citizen of the UnitedStates, residing at Potomac, in the county of Missoula and State ofMontana, have invented a new and useful Fumigator, of which thefollowing is a specification.

This invention relates to improvements in fumigators.

The object of the present invention is to improve the construction offumigators for smoking and suffocating squirrels, rabbits, gophers, andother burrowing animals, and to provide a simple, inexpensive, andefficient device capable of rapidly and thoroughly forcing smoke orfumes into the holes of such animals.

The invention consists in the, construction and novel combination andarrangement of parts, as hereinafter fully described, illustrated in theaccompanying drawings, and pointed out in the claim hereto appended.

In the drawings, Figure 1 is a perspective View of a fumigatorconstructed in accordance with this invention. Fig. 2 is a centralvertical sectional view. Fig.3 is a horizontal sectional view.

Like numerals of reference designate corresponding parts in the severalfigures of the drawings.

1 designates a cylindrical casing composed of upper andlower'telescoping sections 2 and 3, the upper section being providedwith a rigid bail or handle 4 and being adapted to be reciprocatedvertically, whereby the device is adapted to act as a force-pun 1p. Thebail or handle 4:, which issubstantially rectangular, extends over thetop of the upper section, as clearly illustrated in Fig. 1' of theaccompanying drawings, and is secured at the lower terminals of itssides to the upper section 2 at opposite sides thereof. The lowersection 3 is provided at its lower end with a horizontal diaphragm orbottom 5, having an opening which is normally closed by a flap-valve 6,located on the lower face of the diaphragm over an opening 7. The valveis provided -with a substantially horizontally'disposed stem or lever,hinged between its ends to the lower face of the bottom or diaphragm 5and provided with a weight for holding the valve normally closed. Thetop 9 of the upper sec- Serial n. 640,733. (No model.)

tion is provided with a opening 10 and has an inwardly-openingflap-valve 11, mounted on its inner face and constructed similar to thevalve 6, being held normally closed by weight 12.

When the upper section 2 of the casing is raised, air enters through thevalve opening 10 and on the downstroke the pressure of the air holds theupper valve firmly closed and opens the lower valve, so that any smokewithin the device will be expelled through the opening of the bottom ofthe same.

The lower section of the casing is provided with a cylindrical hood orcap 13, adapted to fit over the hole, of a burrowing animal andconsisting of a horizontal flange and a verticalflange or wall dependingfrom the horizontal flange which forms the top of the hood or cap andwhich extends outward from the lower end of the tubular telescopingcasing.

Within the lower section 3 of the telescoping casing is arranged anintermediate horizontal foraminous diaphragm 14, preferably constructedof sheet metal, and consisting of a circular plate provided atits-circumference with substantially radial cuts and having the outportions bent downward to form supporting-flanges 14 These supportingflanges preferably rest loosely upon the horizontal diaphragm or bottom5 of the lower section and hold the foraminous diaphragm up from thevalve, but the diaphragm 14 may be permanently secured in place, ifdesired. This diaphragm permits smoke to be expelled from the bottom ofthe casing, but prevents any of the fuel from passing out through thelower valve-opening. The lower section is provided at its upper edgeswith a packing of asbestosto provide substantially an air-tight joint,and the upper and lower valves are provided at their contact-faces witha coating of similar material.

The device is provided at one side with a handle 15, so that it may bereadily carried, and the hood or cap 13 of the lower section,

besides being adapted for covering a hole, is

lower sections the upper section being .provided at its top with avalve, a horizontal diaphragm mounted on the lower section at the lowerend thereof, and provided with a valve, and a foraminous diaphragmmounted within the lower section at a point above the said diaphragm andforming a fuel-support, said foraminous diaphragm preventing the fuelfrom coming in contact with the lower valve, substantially as and forthe purpose described.

In testimony that I claim the foregoing as my own I have hereto aflixedmy signature in 'the presence of two witnesses.

THOMAS HARVEY MCDONALD. Witnesses:

THOMAS E. EVANS,

W. M. WHITLEY.

